debug(deploy): sync debug changes to hf_backend/app

app/services/plate_recognition.py

@@ -165,7 +165,9 @@ def run_pipeline_remote(*, image_bytes: bytes, filename: Optional[str] = None, c
         raise
     except Exception as exc:
         LOGGER.exception("Remote model service failed")
-        raise HTTPException(status_code=502, detail=f"Remote model service failed: {exc}") from exc
+        import traceback
+        tb = traceback.format_exc()
+        raise HTTPException(status_code=502, detail=f"Remote model service failed: {exc}\nTraceback:\n{tb}") from exc
     finally:
         if os.path.exists(tmp_path):
             try: